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elinks/src/intl/gettext/bindtextdom.c
Petr Baudis 0f6d4310ad Initial commit of the HEAD branch of the ELinks CVS repository, as of
Thu Sep 15 15:57:07 CEST 2005. The previous history can be added to this
by grafting.
2005-09-15 15:58:31 +02:00

264 lines
6.9 KiB
C

/* Implementation of the bindtextdomain(3) function
Copyright (C) 1995-1998, 2000, 2001 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include "elinks.h"
#include "intl/gettext/libintl.h"
#include "intl/gettext/gettextP.h"
#include "util/string.h"
/* Contains the default location of the message catalogs. */
extern const unsigned char _nl_default_dirname__[];
/* List with bindings of specific domains. */
extern struct binding *_nl_domain_bindings__;
/* Prototypes for local functions. */
static void set_binding_values(const unsigned char *domainname,
const unsigned char **dirnamep,
const unsigned char **codesetp);
/* Specifies the directory name *DIRNAMEP and the output codeset *CODESETP
to be used for the DOMAINNAME message catalog.
If *DIRNAMEP or *CODESETP is NULL, the corresponding attribute is not
modified, only the current value is returned.
If DIRNAMEP or CODESETP is NULL, the corresponding attribute is neither
modified nor returned. */
static void
set_binding_values(const unsigned char *domainname,
const unsigned char **dirnamep,
const unsigned char **codesetp)
{
struct binding *binding;
int modified;
/* Some sanity checks. */
if (domainname == NULL || domainname[0] == '\0') {
if (dirnamep)
*dirnamep = NULL;
if (codesetp)
*codesetp = NULL;
return;
}
modified = 0;
for (binding = _nl_domain_bindings__; binding != NULL;
binding = binding->next) {
int compare = strcmp(domainname, binding->domainname);
if (compare == 0)
/* We found it! */
break;
if (compare < 0) {
/* It is not in the list. */
binding = NULL;
break;
}
}
if (binding != NULL) {
if (dirnamep) {
const unsigned char *dirname = *dirnamep;
if (dirname == NULL)
/* The current binding has be to returned. */
*dirnamep = binding->dirname;
else {
/* The domain is already bound. If the new value and the old
one are equal we simply do nothing. Otherwise replace the
old binding. */
unsigned char *result = binding->dirname;
if (strcmp(dirname, result) != 0) {
if (strcmp(dirname, _nl_default_dirname__)
== 0)
result = (unsigned char *)
_nl_default_dirname__;
else {
result = strdup(dirname);
}
if (result != NULL) {
if (binding->dirname !=
_nl_default_dirname__)
free(binding->dirname);
binding->dirname = result;
modified = 1;
}
}
*dirnamep = result;
}
}
if (codesetp) {
const unsigned char *codeset = *codesetp;
if (codeset == NULL)
/* The current binding has be to returned. */
*codesetp = binding->codeset;
else {
/* The domain is already bound. If the new value and the old
one are equal we simply do nothing. Otherwise replace the
old binding. */
unsigned char *result = binding->codeset;
if (result == NULL
|| strcmp(codeset, result) != 0) {
result = strdup(codeset);
if (result != NULL) {
if (binding->codeset != NULL)
free(binding->codeset);
binding->codeset = result;
binding->codeset_cntr++;
modified = 1;
}
}
*codesetp = result;
}
}
} else if ((dirnamep == NULL || *dirnamep == NULL)
&& (codesetp == NULL || *codesetp == NULL)) {
/* Simply return the default values. */
if (dirnamep)
*dirnamep = _nl_default_dirname__;
if (codesetp)
*codesetp = NULL;
} else {
/* We have to create a new binding. */
size_t len = strlen(domainname) + 1;
struct binding *new_binding =
(struct binding *)
malloc(offsetof(struct binding, domainname) + len);
if (new_binding == NULL)
goto failed;
memcpy(new_binding->domainname, domainname, len);
if (dirnamep) {
const unsigned char *dirname = *dirnamep;
if (dirname == NULL)
/* The default value. */
dirname = _nl_default_dirname__;
else {
if (strcmp(dirname, _nl_default_dirname__) == 0)
dirname = _nl_default_dirname__;
else {
unsigned char *result;
result = strdup(dirname);
if (result == NULL)
goto failed_dirname;
dirname = result;
}
}
*dirnamep = dirname;
new_binding->dirname = (unsigned char *) dirname;
} else
/* The default value. */
new_binding->dirname = (unsigned char *) _nl_default_dirname__;
new_binding->codeset_cntr = 0;
if (codesetp) {
const unsigned char *codeset = *codesetp;
if (codeset != NULL) {
unsigned char *result;
result = strdup(codeset);
if (result == NULL)
goto failed_codeset;
codeset = result;
new_binding->codeset_cntr++;
}
*codesetp = codeset;
new_binding->codeset = (unsigned char *) codeset;
} else
new_binding->codeset = NULL;
/* Now enqueue it. */
if (_nl_domain_bindings__ == NULL
|| strcmp(domainname, _nl_domain_bindings__->domainname) < 0)
{
new_binding->next = _nl_domain_bindings__;
_nl_domain_bindings__ = new_binding;
} else {
binding = _nl_domain_bindings__;
while (binding->next != NULL
&& strcmp(domainname,
binding->next->domainname) > 0)
binding = binding->next;
new_binding->next = binding->next;
binding->next = new_binding;
}
modified = 1;
/* Here we deal with memory allocation failures. */
if (0) {
failed_codeset:
if (new_binding->dirname != _nl_default_dirname__)
free(new_binding->dirname);
failed_dirname:
free(new_binding);
failed:
if (dirnamep)
*dirnamep = NULL;
if (codesetp)
*codesetp = NULL;
}
}
/* If we modified any binding, we flush the caches. */
if (modified)
++_nl_msg_cat_cntr;
}
/* Specify that the DOMAINNAME message catalog will be found
in DIRNAME rather than in the system locale data base. */
unsigned char *
bindtextdomain__(const unsigned char *domainname, const unsigned char *dirname)
{
set_binding_values(domainname, &dirname, NULL);
return (unsigned char *) dirname;
}
/* Specify the character encoding in which the messages from the
DOMAINNAME message catalog will be returned. */
unsigned char *
bind_textdomain_codeset__(const unsigned char *domainname, const unsigned char *codeset)
{
set_binding_values(domainname, NULL, &codeset);
return (unsigned char *) codeset;
}